Selecting and displaying data from a custom table

[Dan.ETD]

I have created a custom table in my database holding colour codes for distributors of my products.

I am trying to echo out the header and footer column using the following statement:
$db = DB::getInstance();
$customiseQ = $db->query("SELECT * FROM customise-distributor WHERE distributor = ". $parts[4] ."");
$customise = $customiseQ->first();

echo "Header Colour: ". $customise->header_colour ."";

Why is $customise->header_colour blank?